Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
ONE OF THE KV SERIES
“...Earth was a dull rumble, and on the outskirts of the village of Sitno seemed huge armored vehicles unusual bright yellow color. Glistening tongues of shots, they were slowly sliding...
SOFA-BENCH IN THE KITCHEN
The idea to make on their own comfortable sofa shop for kitchen appeared after unsuccessful searches at furniture stores, which would be in place and responded to my ideas about its...
